Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A wearable motion sensor and its anti-magnetic field interference method

A motion sensor and wearable technology, which is applied in the field of wearable sensors, can solve the problems of weak anti-magnetic field interference and reduced precision, and achieve the effects of good versatility, fewer components and lower costs

Active Publication Date: 2019-12-17
NANJING ZHELI INTELLIGENT MFG RES INST CO LTD
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of weak anti-magnetic interference ability in the prior art, and provide a wearable motion sensor and its anti-magnetic field interference method, which solves the technical problem that the accuracy of the motion sensor decreases when there is external magnetic field interference

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A wearable motion sensor and its anti-magnetic field interference method
  • A wearable motion sensor and its anti-magnetic field interference method
  • A wearable motion sensor and its anti-magnetic field interference method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The present invention will be further described below in conjunction with accompanying drawings, because it is convenient to understand better. The technical features in the present invention can be combined with each other under the premise of not conflicting with each other, which does not constitute a limitation.

[0037] Part noun meanings involved in the present invention are as follows:

[0038] The attitude angle is also called the Euler angle, which is an intuitive attitude representation method. The Euler angle involved in the present invention is the Euler angle of the ZYX rotation sequence, wherein the rotation around the Z axis is the yaw angle, and the rotation around the Y axis is the pitch Angle, the rotation around the X axis is the roll angle.

[0039] Quaternion is another method of attitude representation. It can be understood as rotating an angle around a unit vector. Quaternion representation can avoid the singularity problem of Euler angle represe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a wearable motion sensor and a magnetic field interference resisting method of the wearable motion sensor, belongs to the field of researches of the wearable motion sensors and aiming at accurately estimating a current attitude angle of the sensor in real time under the condition that magnetic field interference exists. A sensor module is used for acquiring real-time data of accelerations, angular speeds and magnetic fields; a current movement state and an external magnetic field interference condition of the sensor are judged according to the information; then multi-sensor information fusion is carried out by adopting a self-adaptive strategy and the attitude angle of the motion sensor is calculated and output. The wearable motion sensor is convenient to use, is not limited by field and is low in cost; the attitude angle of a human body part can be highly accurately measured in real time under the condition that the magnetic field interference exists; the wearable motion sensor has relatively high reliability and relatively good popularization prospect.

Description

technical field [0001] The invention belongs to the field of wearable sensors, in particular to a wearable motion sensor and its anti-magnetic field interference method. Background technique [0002] With the development of micro-electromechanical systems (MEMS) technology, MEMS-based inertial sensors and magnetometers are widely used in the field of human motion analysis, such as gesture recognition, joint kinematics analysis, Daily activity monitoring. Generally, a typical motion sensor includes a three-axis accelerometer, a three-axis gyroscope, and a three-axis magnetometer. For human motion analysis, it is critical to accurately measure the posture of body parts. In order to accurately obtain the posture of body parts, multi-sensor information fusion through fusion algorithms is a common method. The more commonly used fusion algorithms include extended Kalman filter method, gradient descent method, complementary filter method, etc. Through these algorithms, the accura...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/00G01C21/16
CPCG01C21/005G01C21/165
Inventor 刘涛范冰飞李庆国
Owner NANJING ZHELI INTELLIGENT MFG RES INST CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com